CN106352097A - Combined labyrinth sealing device - Google Patents
Combined labyrinth sealing device Download PDFInfo
- Publication number
- CN106352097A CN106352097A CN201610967443.7A CN201610967443A CN106352097A CN 106352097 A CN106352097 A CN 106352097A CN 201610967443 A CN201610967443 A CN 201610967443A CN 106352097 A CN106352097 A CN 106352097A
- Authority
- CN
- China
- Prior art keywords
- sealing
- sealing device
- bracket
- strip
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/453—Labyrinth packings characterised by the use of particular materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
- B65G53/4608—Turnable elements, e.g. rotary wheels with pockets or passages for material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/042—Granular material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to a combined labyrinth sealing device, which comprises sealing devices, a sealing strip and a bracket, wherein the cross section of the bracket is in an m shape; two outer groove strips and 1 to 30 inner groove strips are formed in the bracket; the outer groove strips and the inner strip groove(s) of the bracket support the sealing devices; the outer groove strips also achieve the dustproof and waterproof effects; the sealing devices are inserted in an inner groove of the bracket; a sealing strip is arranged in the groove formed between the sealing devices; the sealing strip is arranged on the inner groove strip. The combined labyrinth sealing device has the advantages that according to the dynamic sealing requirements, different characteristics of the sealing materials are combined; the bracket is made of materials of soft rubber; the sealing devices and the sealing strips are made of graphite, perfluoroethylene and the like; the soft materials and the hard materials are combined; through the buffer support by the rubber bracket, the radian surface sealing strips and the sealing device can achieve a better dynamic sealing effect; the excellent sealing performance of wear resistance, dustproof effect and leakage prevention functions can be achieved.
Description
Technical field
The present invention relates to being a kind of labyrinth gland, more specifically Combined Labyrinth sealing device.
Background technology
Labyrinth seal is that have perhaps flexuose cell to make the sealing that leakage reduces between rotational parts and retaining element.Typically
Labyrinth seal be often the all-in-one-piece labyrinth gland that a kind of material makes.Labyrinth seal is not subject to rotary speed and temperature
Restriction, friction power loss is minimum.Prior art labyrinth seal typically utilizes the principle of groove and groove, by the spacer of body and end cap
On be processed into the groove cooperating, leave the gap of very little between groove and groove, set the ring that several are arranged in order around rotating shaft
Row sealing tooth, formed between tooth and tooth a series of dam gap and expand cavitys, sealed medium is between by tortuous labyrinth
Throttle effect and Drain Resistance is produced during gap.
At present, airlock, wind stopping device, discharge gate are applied to the handling of dry powdery and granule materials；Airlock, close wind
Device, discharge gate are made up of valve body, column type impeller, bearing, sealing device, driving means.Column type impeller is in valve body
Intracavity, column type impeller is made up of valve shaft, barrel valve, storage bin, sealing device.Pacify on the barrel valve of the surrounding of storage bin Hatch Opening
Equipped with sealing device；Because the material of conveying needs to transmit in system that is airtight and having high pressure, negative pressure, to Impeller airlock
The requirement more and more higher of air-tightness, gas leakage and discharge pressure；The current little poor air-tightness of Impeller airlock sealing surface, air leakage
Greatly, the charging of vacuum drying apparatus, the high gas-tight seal use requirement of discharging are not reached.Dynamic sealing requirements to sealing device
Gao Liao, needs to ensure that airlock, wind stopping device, high-air-tightness in operation process for the discharge gate be strong, air leakage is small.
Content of the invention
The problem to be solved in the present invention is to overcome the shortcomings of that prior art exists, there is provided a kind of dynamic sealing performance is good
Combined Labyrinth sealing device, it utilizes the sealing principle of groove and groove, and in conjunction with the characteristic of different encapsulants, soft or hard combines,
Reach wear-resisting, dust-proof, leakproof performance.
In order to reach above-mentioned purpose, the present invention is achieved through the following technical solutions: in order to reach above-mentioned requirements, combination type
Labyrinth gland includes sealing device, sealing strip, bracket.
The making material of described bracket is rubber, or compound material.
The outward appearance of described bracket is the sealing strip of strip, or the sealing ring of o type.
The cross section of described bracket is m shape, and bracket has 2 water jacket bars, 1 30 groove bars.
The height of the aspect ratio groove bar of described water jacket bar is high.
1st, the depth of the groove of bracket is 1.5 25mm, and the width of groove is 1 3mm.
2nd, the height of water jacket bar is 2 30mm；The width of water jacket bar is 0.5 5mm；The length of water jacket bar is 20
1000mm.
3rd, the height of inside groove bar is 1 28mm；The width of inside groove bar is 0.1 5mm；The length of groove bar is 20
1000mm.
Described water jacket bar plays dust-proof, waterproof effect.
The upper surface of described water jacket bar is plane, or concave arc degree shape, or convex arc degree shape.Water jacket bar upper
End face, according to different sealing surface needs, designs suitable contact surface, increases dust-proof effect.
1st, bracket is o type sealing ring, and when notch is outside, the upper surface of water jacket bar is convex arc degree shape.
2nd, bracket is o type sealing ring, and when notch is inside, the upper surface of water jacket bar is concave arc degree shape.
3rd, bracket is the sealing strip of strip, and when notch is parallel, the upper surface of water jacket bar is plane.
The making material of described sealing device is rubber, or metal, or graphite, or tetrafluoroethene,
Or compound material.
The making material of described sealing strip is rubber, or metal, or graphite, or tetrafluoroethene, or
Person is compound material.
Described sealing device is the sealing strip of strip, or the sealing ring of o type.
Described sealing device is arranged in the groove of bracket.
1st, the height of sealing device is 2.5 28mm, and the width of sealing device is 0.1 3mm；The length of sealing device is
20—1000mm.
2nd, high 1 3mm of the height of the upper surface of groove bar of the aspect ratio bracket of the upper surface of sealing device.
3rd, the height of the upper surface of sealing device is the same height with the height of the upper surface of the water jacket bar of bracket.
The groove of each of present labyrinth gland is insertion, does not separate between its groove.
Described sealing strip is the sealing strip of strip.
There is sealing strip in inside groove between described sealing device and sealing device.
Described sealing strip is mounted in above groove bar, or sealing strip and groove bar are one.
1st, in the inside groove between sealing device and sealing device every one segment distance install a sealing strip, sealing device with
The little space sealing one by one can be formed in inside groove between sealing device, strengthen interior between sealing device and sealing device
The tightness of groove, reduces the effect revealed.
2nd, the upper surface height of sealing strip is highly the same with the upper surface of sealing device；The width of sealing strip and groove
The width of bar is the same, and the length of sealing strip is 1 8mm.
The fixed sealing device of described bracket, during dynamic sealing, bracket also act as to the power-assisted of sealing device,
The effect absorbing.
According to the needs of dynamic sealing, in conjunction with the different qualities of encapsulant, the material of bracket is that soft rubber makes
, sealing device is that graphite makes, and two soft or hards combine, and are supported by the pressure buffer of rubber bracket, and sealing device is permissible
Reach more preferable dynamic sealing effect.
1st, sealing device is pressed in the groove of the bracket of rubber, the pressure of the sealing device that the bracket of rubber is subject to is permissible
Sealing device is passed in bounce-back, increases the palette dynamics of sealing device.
2nd, the pressure in the external world that sealing device is subject to can be conducted on the bracket of rubber, and the bracket of such rubber absorbs
Excess pressure, it is possible to reduce the abrasion of sealing device.
The upper surface of described sealing device is plane, or concave arc degree shape, or convex arc degree shape；According to difference
Sealing surface need, design suitable contact surface, increase sealing area.
The upper surface of described sealing strip is plane, or concave arc degree shape, or convex arc degree shape；According to different
Sealing surface needs, and designs suitable contact surface, increases sealing area.
1st, bracket is o type sealing ring, and sealing device is o type sealing ring, and when notch is outside, the upper surface of sealing device is
Convex arc degree shape, the upper surface of sealing strip is convex arc degree shape.
2nd, bracket is o type sealing ring, and sealing device is o type sealing ring, and when notch is inside, the upper surface of sealing device is
Concave arc degree shape；The upper surface of sealing strip is concave arc degree shape.
3rd, bracket is the sealing strip of strip, and sealing device is sealing strip, when notch is parallel, the upper end of sealing device
Face is plane；The upper surface of sealing strip is plane.
The described installation of Combined Labyrinth sealing device, the method using and labyrinth gland currently on the market
The method install, using is the same.Combined Labyrinth sealing device is also applied to the sealing device of liquid, gas
On, it has reached wear-resisting, dust-proof, leakproof excellent sealing performance, durable in use.
The present invention is had the advantages that with existing labyrinth gland ratio: Combined Labyrinth sealing device is according to dynamic
The needs of sealing, it utilizes the sealing principle of groove and groove, and in conjunction with the characteristic of different encapsulants, soft or hard combines, and has reached resistance to
Mill, dust-proof, leakproof performance.The material of bracket is that soft rubber makes, and sealing device, sealing strip are graphite, tetrafluoro second
Alkene makes, and two soft or hards combine, and are supported by the pressure buffer of rubber bracket, and the sealing device in radian face can reach more preferably
Dynamic sealing effect.
Brief description
Fig. 1, the schematic front view of the Combined Labyrinth sealing device of the present invention；
Fig. 2, the schematic diagram of the cross section of Combined Labyrinth sealing device of the present invention；
Fig. 3, the schematic diagram of the cross section of the bracket of Combined Labyrinth sealing device of the present invention.
Specific embodiment:
The present invention is described further with reference to the accompanying drawings and examples.
Embodiment: a kind of Combined Labyrinth sealing device as shown in Figure 1, it includes sealing device (1), sealing strip (8),
Bracket (2).
The making material of described bracket (2) is rubber.
The outward appearance of described bracket (2) is strip.
The cross section of bracket (2) as shown in Figure 2 and Figure 3 is m shape.
2 water jacket bars (5), 3 groove bars (6) are had on described bracket (2).
The height of aspect ratio groove bar (6) of described water jacket bar (5) is high.
1st, the depth of the groove (4) of bracket (2) is 3mm, and the width of groove (4) is 2mm.
2nd, the height of water jacket bar (5) is 5mm；The width of water jacket bar (5) is 2mm；The length of water jacket bar (5) is 380mm.
3rd, the height of inside groove bar (6) is 3.5mm；The width of inside groove bar (6) is 1mm；The length of groove bar (6) is 380mm.
Described water jacket bar (5) plays dust-proof, waterproof effect.
When the outward appearance of described bracket (2) is the sealing strip of strip, when groove (4) mouth is parallel, the water jacket bar of bracket (2)
(5) upper surface (3) is plane.
The making material of described sealing device (1) is graphite；Sealing device (1) is the sealing strip of strip.
The making material of described sealing strip (8) is tetrafluoroethene；Sealing strip (8) is the sealing strip of strip.
The groove (4) that sealing device (1) as shown in Figure 2 and Figure 3 is arranged on bracket (2) is inner.
1st, the height of sealing device (1) is 5mm, and the width of sealing device (1) is 1mm；The length of sealing device (1) is
380mm.
2nd, the height of groove bar (6) upper surface (3) of the aspect ratio bracket (2) of sealing device (1) upper surface (3) is high
1.5mm.
3rd, the height of sealing device (1) upper surface (3) is the same with the height of water jacket bar (6) upper surface (3) of bracket (2)
Height.
There is sealing strip (8) in groove between sealing device (1) as shown in Figure 1 and Figure 2 and sealing device (1)；Sealing strip
(8) above groove bar (6).
Sealing strip (8) the 1st, is installed in the inside groove between sealing device (1) and sealing device (1), sealing device (1) with close
The little space sealing one by one can be formed in inside groove between seal apparatus (1)；Strengthen sealing device (1) and sealing device (1)
Between groove in tightness, reduce reveal effect.
2nd, the upper surface (3) of sealing strip (8) is highly highly the same with the upper surface of sealing device (1) (3)；Sealing strip
(8) width is the same with the width of groove bar (6), and the length of sealing strip (8) is 3mm.
When described bracket (2) is the sealing strip of strip, the upper surface (3) of sealing device (1) is plane；Sealing strip
(8) upper surface (3) is plane.
The installation of Combined Labyrinth sealing device, use method and common labyrinth gland installation, use
Method is the same.
1st, the needs according to dynamic sealing, in conjunction with the different qualities of encapsulant, the material of bracket (2) is soft rubber
Make, sealing device (1) is that graphite makes, sealing strip (8) is that tetrafluoroethene makes.
2nd, the fixed sealing device of bracket (2) (1), during dynamic sealing, bracket (2) also acts as to sealing device
(1), the power-assisted of sealing strip (8), the effect absorbing.
3rd, bracket (2), sealing device (1), the soft or hard that sealing strip is (8) three combines, and is delayed by the pressure of rubber bracket (2)
Punching supports, and sealing device (1), sealing strip (8) can reach more preferable dynamic sealing effect.
4th, sealing device (1) is pressed into the inside groove (4) in bracket (2), sealing strip (8) is above groove bar (6)；Pressure
Sealing device (1), sealing strip (8) are collapsed in bracket (2), the sealing device (1) that the bracket (2) of rubber is subject to, sealing strip
(8) pressure creates bounce, and bracket (2) can be so permissible by bounce anti-pass to sealing device (1), sealing strip (8)
Increase sealing device (1), the palette dynamics of sealing strip (8).
5th, sealing device (1), the pressure in the external world that sealing strip (8) is subject to can be conducted on the bracket (2) of rubber, sealing
Device (1), sealing strip (8) can be trapped in bracket (2), and the bracket (2) of rubber at this moment absorbs excess pressure, it is possible to reduce
Sealing device (1), the abrasion of sealing strip (8).
Above example is only intended to help understand manufacture method and its core concept of the present invention, is embodied as not limiting to
In above-mentioned specific embodiment, those skilled in the art is from above-mentioned design, without performing creative labour, done
Change, all fall within protection scope of the present invention.
Claims (9)
1. a kind of Combined Labyrinth sealing device it is characterised in that: Combined Labyrinth sealing device includes sealing device (1), close
Strip of paper used for sealing (8), bracket (2)；
The cross section of described bracket (2) is m shape；
Described bracket (2) is the sealing strip of strip, or the sealing ring of o type；
2 water jacket bars (5), 1 30 groove bars (6) are had on described bracket (2)；
The height of the upper surface (3) of aspect ratio groove bar (6) of the upper surface (3) of described water jacket bar (5) is high；
The depth of the groove (4) of described bracket (2) is 1.5 25mm, and the width of groove (4) is 1 3mm；
The groove (4) that described sealing device (1) is arranged on bracket (2) is inner；
The upper surface (3) of described water jacket bar (5) is plane, or concave arc degree shape, or convex arc degree shape；
Described sealing device (1) is the sealing strip of strip, or the sealing ring of o type；
The upper surface (3) of described sealing device (1) is plane, or concave arc degree shape, or convex arc degree shape；
Described sealing strip (8) is the sealing strip of strip；
The upper surface (3) of described sealing strip (8) is plane, or concave arc degree shape, or convex arc degree shape；
The height of the upper surface (3) of the groove bar (6) of the aspect ratio bracket (2) of described sealing device (1) upper surface (3) is high
The height of water jacket bar (5) upper surface (3) of 1 3mm, the height of sealing device (1) upper surface (3) and bracket (2) is the same；
There is sealing strip (8) in inside groove between described sealing device (1) and sealing device (1)；
The upper surface (3) of described sealing strip (8) is highly highly the same with the upper surface of sealing device (1) (3)；Sealing strip
(8) width is the same with the width of groove bar (6), and the length of sealing strip (8) is 1 8mm.
2. a kind of Combined Labyrinth sealing device according to claim 1 it is characterised in that: the making material of bracket (2)
It is rubber, or compound material.
3. a kind of Combined Labyrinth sealing device according to claim 1 it is characterised in that: the height of water jacket bar is 2
30mm；The width of water jacket bar is 0.5 5mm；The length of water jacket bar is 20 1000mm；The height of inside groove bar is 1 28mm；Interior
The width of groove bar is 0.1 5mm；The length of groove bar is 20 1000mm.
4. a kind of Combined Labyrinth sealing device according to claim 1 it is characterised in that: bracket (2) be o type sealing
Circle, when groove (4) mouth is outside, the upper surface (3) of water jacket bar (5) is convex arc degree shape；Bracket (2) is o type sealing ring, groove (4)
When mouth is inside, the upper surface (3) of water jacket bar (5) is concave arc degree shape；Bracket (2) is the sealing strip of strip, and groove (4) mouth is parallel
When, the upper surface (3) of water jacket bar (5) is plane.
5. a kind of Combined Labyrinth sealing device according to claim 1 it is characterised in that: the making of sealing device (1)
Material is rubber, or metal, or graphite, or tetrafluoroethene, or compound material.
6. a kind of Combined Labyrinth sealing device according to claim 1 it is characterised in that: the making material of sealing strip (8)
Material is rubber, or metal, or graphite, or tetrafluoroethene, or compound material.
7. a kind of Combined Labyrinth sealing device according to claim 1 it is characterised in that: the height of sealing device (1)
It is 2.5 28mm, the width of sealing device (1) is 0.1 3mm, the length of sealing device (1) is 20 1000mm.
8. a kind of Combined Labyrinth sealing device according to claim 1 it is characterised in that: bracket (2) be o type sealing
Circle, sealing device is o type sealing ring, and when groove (4) mouth is outside, the upper surface (3) of sealing device (1) is convex arc degree shape, sealing
The upper surface (3) of bar (8) is convex arc degree shape；
Bracket (2) is o type sealing ring, and sealing device is o type sealing ring, when groove (4) mouth is inside, the upper end of sealing device (1)
Face (3) is concave arc degree shape, and the upper surface (3) of sealing strip (8) is concave arc degree shape；
Bracket (2) is the sealing strip of strip, and sealing device is sealing strip, when groove (4) mouth is parallel；Sealing device (1)
Upper surface (3) is plane, and the upper surface (3) of sealing strip (8) is plane.
9. a kind of Combined Labyrinth sealing device according to claim 1 it is characterised in that: sealing strip (8) is mounted in
Above groove bar (6), or sealing strip (8) and groove bar (6) are one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967443.7A CN106352097B (en) | 2016-11-05 | 2016-11-05 | Combined labyrinth sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967443.7A CN106352097B (en) | 2016-11-05 | 2016-11-05 | Combined labyrinth sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106352097A true CN106352097A (en) | 2017-01-25 |
| CN106352097B CN106352097B (en) | 2018-01-26 |
Family
ID=57865035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610967443.7A Active CN106352097B (en) | 2016-11-05 | 2016-11-05 | Combined labyrinth sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106352097B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749901A (en) * | 2019-03-29 | 2020-10-09 | 上海海立电器有限公司 | Check valve and rotor compressor |
| CN112324524A (en) * | 2020-11-03 | 2021-02-05 | 中国北方发动机研究所(天津) | Composite sealing ring of supercharger |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169788A (en) * | 1996-12-13 | 1998-06-26 | Hitachi Ltd | Water sealing device and water turbine with such water sealing device |
| CN2793459Y (en) * | 2005-04-18 | 2006-07-05 | 邯郸钢铁股份有限公司 | Sealing assembly of rotary component |
| CN200975264Y (en) * | 2006-09-12 | 2007-11-14 | 赵岫华 | Labyrinth sealing |
| CN205605826U (en) * | 2015-06-18 | 2016-09-28 | 孔向东 | Composite seal who is suitable for double -phase medium of solid -liquid |
| CN206112093U (en) * | 2016-11-05 | 2017-04-19 | 张海娟 | Modular labyrinth seals device |
-
2016
- 2016-11-05 CN CN201610967443.7A patent/CN106352097B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169788A (en) * | 1996-12-13 | 1998-06-26 | Hitachi Ltd | Water sealing device and water turbine with such water sealing device |
| CN2793459Y (en) * | 2005-04-18 | 2006-07-05 | 邯郸钢铁股份有限公司 | Sealing assembly of rotary component |
| CN200975264Y (en) * | 2006-09-12 | 2007-11-14 | 赵岫华 | Labyrinth sealing |
| CN205605826U (en) * | 2015-06-18 | 2016-09-28 | 孔向东 | Composite seal who is suitable for double -phase medium of solid -liquid |
| CN206112093U (en) * | 2016-11-05 | 2017-04-19 | 张海娟 | Modular labyrinth seals device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749901A (en) * | 2019-03-29 | 2020-10-09 | 上海海立电器有限公司 | Check valve and rotor compressor |
| CN112324524A (en) * | 2020-11-03 | 2021-02-05 | 中国北方发动机研究所(天津) | Composite sealing ring of supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106352097B (en) | 2018-01-26 |
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Effective date of registration: 20201130 Address after: 215421, Sha Lu Road 199, Shaxi Town, Suzhou, Jiangsu, Taicang Patentee after: SUZHOU EDWARD PETROCHEMISTRY Co.,Ltd. Address before: Jianxi Peony Road 471003 South Street Henan Luoyang Province Tang Village No. 10 Patentee before: Zhang Haijuan |